William j



(No Model.)

W. J. HEARN.

PUMP.

10.436,708. mam Sept. 16,1890.

ATTORNEYS UNITED STATES PATENT OEEIcE.

WILLIAM J. I-IEARN, OF NEW' YORK, N. Y.

PUMP.

SPECIFICATION forming part of Letters Patent No. 436,708, datedSeptember 16, 1890.

Application filed March 6, 1890. Serial No. 342,844.' (No model.)

.T0 all whom t may concern.-

Be it known that I, WILLIAM J. HEARN, a citizen of the United States,residing at New York, in the county and State of New York, have inventednew and useful Improvements in Pumps, of which the following is aspecilication.

This invention relates to an improvement in pulnps; and the inventionconsists in the details of construction set forth in the followingspeciication and claims and illustrated in the accompanying drawings, inWhich- Figure l is a sectional elevation of a pump, the section beingtaken along line Fig. 2. Fig. 2 isa section alongline y y, Fig. l. Fig.3 is a section along line e z, Fig. l. Fig. lis a section along line ww, Fig. 2.

In the drawings, the letterA indicates abarrel in which worksapiston B.The piston-rod C communicates with an actuator, such as alever D. Thedescent of the piston B allows water or liquid to pass through theupwardlyopeningvalve X ot' the piston, and the ascent of such pistoncloses the valve X and forces the liquid which has collected above thepiston B out through the discharge-openingE. The barrelA communicates bymeans of a 'pipe F with a vessel or chamber G. In the chamber G rises atube or pipe II for a certain distance, and said tube H communicateswith a lower chamber I. From the lower chamber I a pipe or tube K leadsto the fluid which is to be pumped. The tube K is provided with anupwardly-opening valve L.

A cup T sits snugly over the pipe I-I, and said cup can slide on saidpipe. A spring Y tends to force the cup T upward. Said cup has anupwardlyopening valve U. This valve U is shown in form of a fiat valve;but any suitable valve-such as a ball-valvemay be substituted.

I n the lower chamber I Inoves a piston WV, having a valve Y. The rod Oof the piston is guided near its upper end by passing through the upperpart of the cup T and through the valve U. The valve U is capable of acertain motion independent of the cup T. A nut M prevents the valvecoming oII the rod O.

Vhen the piston B is forced down, the cup T and piston W descend,opening the valves U Y and closing valve L. I/Vater or iluid in thelower part of chamber I thus passes through valve Y to the upper part ofchamber I, and fluid in the cup T passes through valve U into chamber G.The ascent of piston B causes the fluid to pass from chamber G throughpipe F into barrel A, while at the same time the spring Vraises the cupT and piston WV so as to close valves U Y and open valve L. Fluid thenpasses from pipe K into the lower chamberI to replace the fluid whichpasses from chamber I into pipe II on the rise of piston WV.

The pumping mechanism shown in the drawings is in form of a hand-pump;but of course a steam-pump or any suitable pump mechanism can be used.

By connecting the chambers G I with their contained parts to the pumpingmechanism said mechanism is assisted so that the fluid can be raised toa greater height than could be obtained by the unaided pumpingmechanism.

What I claim as new, and desire to 'secure by Letters Patent, is

l. The combination, with the puInp--barrel A and piston B, of the upperchamber G, the lower chamber I, the pipe F, connecting the top of theupper chamber with the pumpbarrel, the pipe I-I, rising in the upperchamber, the valved cup T, rising and falling on the pipe in the lowerchamber, a spring V, surrounding the pipe and cup Within the upperchamber and bearing against the cup to elevate the same, a valved pistonW in the lower chamber, the piston-rod O, and valved tube K,substantially as described.

2. The combination, with apumping mechanism, of the upper chamber havingits top end connected with the pumping Inechanism, the lower chamberconnected to the upper chamber, the pipe rising from the lower chamber,the cup moving vertically on the pipe in ing from the lower chamber,substantially as xo the upper chamber, the spring surrounding described.

the pipe and cup within the upper chamber In testimony whereof I havehereunto set and bearing' against the cup to raise the my hand in thepresence of two subscribing same, a valved piston in the lower chamber,witnesses.

a piston-rod extending through the upper end VILLIAM J. I-IEARN. of thecup, a valve rising and falling on and Witnesses: guided by thepiston-rod above the cup and WVM. C.V HAUFF,

seating on the latter, and a valved tubeleadv E. F. KASTENHUBER.

